Welcome Sam! I'm pretty new still too...but, I would most definitely recommend the book. If for nothing else, so that it 'clicks' with you as to why and how our bodies react to the foods, what sorts are 'bad' vs. 'good', etc. Lots of good information in there. I ended up purchasing mine on Ebay for under $10.
First, I would expect to feel weak/tired for at least up to 5 days...body is readjusting and detoxing from what you used to eat. Secondly, make sure you eat something about every three hours and get your veggies in!
Also, make sure everything you are eating are allowed...is it all natural peanut butter (I big time goofed and at regular,
), the right kind of cream cheese...only the x amount of allowed almonds per day, etc...anyways, I would get the book, that should help you a lot also.
Good luck!